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Turkish Journal of Electrical Engineering and Computer Sciences

CAHİT CANBAY

DOI

10.3906/elk-1811-149

Abstract

Frequent use of magnetic resonance imaging (MRI) devices, which are major contributors in understanding health problems in the human body, is a subject that needs to be taken into consideration both for patients and for operators who are constantly in the vicinity of devices. In this context, electromagnetic impact assessment of an MRI device was performed at the point where the patient entered the device. Dielectrophoretic fields induced by radio frequency (RF) coils of an MRI scanner on male and female operator brain models were computed by using dispersive electrical medium parameters. The main cause of induced secondary dielectrophoretic fields by the RF coils of the MRI scanner is the veins modelled as monopole antennas on the lateral ventricle. The results explain that the dielectrophoretic fields near the veins on the ependymal surfaces are the main cause of Dawson fingers that may develop in the brains of multiple sclerosis (MS) patients and people at risk of the disease. Due to the use of the phantom results and the dispersive values of the electrical medium parameters, the results can be said to be close to the actual values and reliable. Therefore, the study will contribute to the confirmation of the hypotheses, developed by the author from a different perspective, related to the etiology of MS and will provide an accurate understanding of the concept of radiologically isolated syndrome. Everyone, including MRI designers, neurologists, radiologists, operators, and MS patients, can find any of the original information about MS that they need.

Keywords

Multiple sclerosis, dielectrophoretic force, Dawson fingers, MRI, radiologically isolated syndrome, MRI operators, etiology

First Page

4354

Last Page

4360

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